How to find pdf is edited or not using python?











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I am designing a solution for a fintech company where we need to identify if the uploaded documents like bank statements is original or not ,programmatically. We are using python packages like tika , tabula etc. to extract the text and meta data . My question is there any information in meta data that could help to identify if the PDF document is changed after downloading from original source?



Any reference material or paper would be greatly helpful.



thanks






python pdf apache-tika data-extraction







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    I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
    – Dom
    Nov 19 at 12:15















up vote
-3
down vote

favorite












I am designing a solution for a fintech company where we need to identify if the uploaded documents like bank statements is original or not ,programmatically. We are using python packages like tika , tabula etc. to extract the text and meta data . My question is there any information in meta data that could help to identify if the PDF document is changed after downloading from original source?



Any reference material or paper would be greatly helpful.



thanks






python pdf apache-tika data-extraction







share|improve this question




















  • 2




    I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
    – Dom
    Nov 19 at 12:15













up vote
-3
down vote

favorite









up vote
-3
down vote

favorite











I am designing a solution for a fintech company where we need to identify if the uploaded documents like bank statements is original or not ,programmatically. We are using python packages like tika , tabula etc. to extract the text and meta data . My question is there any information in meta data that could help to identify if the PDF document is changed after downloading from original source?



Any reference material or paper would be greatly helpful.



thanks






python pdf apache-tika data-extraction







share|improve this question















I am designing a solution for a fintech company where we need to identify if the uploaded documents like bank statements is original or not ,programmatically. We are using python packages like tika , tabula etc. to extract the text and meta data . My question is there any information in meta data that could help to identify if the PDF document is changed after downloading from original source?



Any reference material or paper would be greatly helpful.



thanks






python pdf apache-tika data-extraction




python pdf apache-tika data-extraction






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 2 days ago

























asked Nov 19 at 11:41









Ravi Siswaliya

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95








  • 2




    I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
    – Dom
    Nov 19 at 12:15














  • 2




    I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
    – Dom
    Nov 19 at 12:15








2




2




I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
– Dom
Nov 19 at 12:15




I would guess the only way to check would be if the original pdf had a signature. If it doesn't, then you could only know if you had a copy of the original and could compare hashes. Python can generate and compare hashes of things, but unless the pdf has a signature that you can verify with public key, or certificate authority, or you have the original (to compare) then this wouldn't be too useful.
– Dom
Nov 19 at 12:15

















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